She received several official letters this morning.

她今天早晨收到了几封公函。

youdao

New officials also had little experience in writing official letters or documents.

新官员也不太懂怎么书写公文函件。

youdao

This, however, only solved the problem of official letters, and civilians were left without any means of written communication.

这只解决了递送公文的问题，老百姓寄信还是没有办法。

youdao

All official letters must, in theory, be sent out only in Dutch.

ECONOMIST: Rows over who should speak in which tongue have got worse

The committee will now send official letters to the Scottish Funding Council, the Scottish government and Glasgow University asking what can be done to save the courses.

BBC: Public Petitions Committee 1

One official at the Letters and Calls bureau has been removed from his post and another suspended, Xinhua reported.

BBC: China beating: Anger after man mistaken for petitioner